東方 or 東方Ｐｒｏｊｅｃｔ.

• DynaMarisa 3D - Decent EDF-like game.
• Touhou Spell Bubble - Really fun Puzzle Bobble-clone with some cool extra mechanics.

• Touhou Defense Force - 2-D arena shooter.
• 

Because of the big variety of people who've made Touhou games, there can be a big variety in how much success you'll have running them in 202X.

• https://touhou.fandom.com/wiki/Running_in_Linux
• https://en.touhouwiki.net/wiki/Running_in_Linux_and_Mac_OS_X
• https://old.reddit.com/r/touhou/comments/f6r1lq/how_do_i_run_touhou_games_on_linux/

• Touhou Project
• Touhou Wiki
• Touhou Project Wiki (Wikia)